[TW] Core/Spell: Druid T10 Resto 4PC Rejuvenation

- Should not apply to targets that already have rejuvenation cast by
that player
- Should select lowest health player in group
- Not sure on attr change it works though. All the spells with this attr
are healing spells that take damage from the trigger spell or are % of
health that shouldn't have bonuses applied but this is the only one that
healing bonuses are being applied to. Maybe overlooking something.
- still bug with it stacking should be fixed in DB
Merge pull request #63 from gecko32/Patch8

[TW] Core/Spell: Druid T10 Resto 4PC Rejuvenation
更新
Merge branch 'ghbb2' of https://github.com/shenhuyong/TrinityCore into ghbb
Merge branch 'master' of https://github.com/TrueWoW/TrinityCore into ghbb

Conflicts:
	src/server/game/Entities/Unit/Unit.cpp